Use Minecraft Bedrock World in Java Edition?

I bought the Minecraft Bedrock Edition for Windows 10 because I got it much cheaper than the Java Edition. I have already built a lot there in 1 world, there are many hours of work involved.

Now I'm considering switching to the Java Edition, because it is much more flexible with e.g. Mods is.

Is there a way to transfer my world from Bedrock Edition to Java Edition and play there?

As far as I'm informed, this is unfortunately not possible. But I would like to be taught better because I'm probably interested in that too.